Dusseldorf - The roof of a university building collapsed after a severe storm swept across southern Germany, but no one was injured in the incident, the University of Wuppertal said on its website late Tuesday.

As much as 50 square metres of the roof collapsed due to strong winds and heavy rain. The entire basement and parts of the ground floor have been flooded, the university said.

Lambert T Koch, the dean of the university, said the cost of the damage would be "significant," but did not give further details.